Pipe Bomb Suspect's Own Mom Called 911

According to court documents, John Grzyminski's mother told investigators she felt threatened by her own son after she came home from the hospital to find that he'd removed her wheelchair access to her own home.

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May 11, 2012: John Grzyminski is being charged with knowingly possessing firearms that were not legally registered to him -- three pipe bombs, according to court documents.

Updated at 2:15 PM EST on Friday, May 11, 2012

John Grzyminski's mother told investigators she felt threatened by her own son after she came home from the hospital on Wednesday to find that he'd removed her wheelchair access to her own home, according to court documents released today.

The mother, Catherine Wilson, was brought home from the hospital by her other son, Michael. When they arrived at her home on Saddle Drive in Warrington, Bucks County, Pa., that afternoon, they were confronted by John Grzyminski, according to the criminal complaint. He had been staying at the house.

Pipe Bomber Suspect Arrested

John Grzyminski was arrested Thursday for explosive devices found in his home in Warrington Township, Bucks County said police. According to investigators Gryzyminski's mother found a suspicious device in their home on Wednesday and called the police. NBC10's Terry Ruggles reports. (Published Thursday, May 10, 2012)

According to the affidavit:

"Wilson stated that she felt that John Grzyminski did not want her back at the house as he had intentionally removed her wheelchair access in the house while she was gone. The two brothers got into an argument and Wilson called 911."

Alleged Pipe Bomber Calls Them Firecrackers

John Grzyminski was arrested Thursday for explosive devices found in his home in Warrington Township, Bucks County said police. According to investigators Gryzyminski's mother found a suspicious device in their home on Wednesday and called the police. NBC10's Terry Ruggles talked to Grzyminski and one of his neighbors. (Published Thursday, May 10, 2012)

The mom told police she was also concerned because her son had a number of firearms in the house. Police told her that he was within his legal rights and left.

A short time later, the suspect's mother and brother discovered what turned out to be a pipe bomb, in the kitchen. They called police again and that's when the Philly bomb squad and Alcohol, Tobacco and Firearms agents were called in to help. At that point, Grzyminski told them his family had found a fireworks device for the Fourth of July. They ended up disabling three pipe bombs, according to court documents.

He's being charged with knowingly possessing firearms that weren't registered to him, "that is three pipe bombs which are destructive devices," according to the criminal complaint. His detention hearing is scheduled for May 16.